<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>es12的特性</title>
</head>
<body>
  
  <script>

    

    //强引用
    let info = {name: "why", age: 18}
    const obj = info
    obj.name = "haha"
    console.log(obj)
  </script>
</body>
</html>